1 /* Defines for using and allocating dma channels. */
3 #ifndef _ASM_ARCH_DMA_H
4 #define _ASM_ARCH_DMA_H
6 #define MAX_DMA_CHANNELS 10
8 /* dma0 and dma1 used for network (ethernet) */
9 #define NETWORK_TX_DMA_NBR 0
10 #define NETWORK_RX_DMA_NBR 1
12 /* dma2 and dma3 shared by par0, scsi0, ser2 and ata */
13 #define PAR0_TX_DMA_NBR 2
14 #define PAR0_RX_DMA_NBR 3
15 #define SCSI0_TX_DMA_NBR 2
16 #define SCSI0_RX_DMA_NBR 3
17 #define SER2_TX_DMA_NBR 2
18 #define SER2_RX_DMA_NBR 3
19 #define ATA_TX_DMA_NBR 2
20 #define ATA_RX_DMA_NBR 3
22 /* dma4 and dma5 shared by par1, scsi1, ser3 and extdma0 */
23 #define PAR1_TX_DMA_NBR 4
24 #define PAR1_RX_DMA_NBR 5
25 #define SCSI1_TX_DMA_NBR 4
26 #define SCSI1_RX_DMA_NBR 5
27 #define SER3_TX_DMA_NBR 4
28 #define SER3_RX_DMA_NBR 5
29 #define EXTDMA0_TX_DMA_NBR 4
30 #define EXTDMA0_RX_DMA_NBR 5
32 /* dma6 and dma7 shared by ser0, extdma1 and mem2mem */
33 #define SER0_TX_DMA_NBR 6
34 #define SER0_RX_DMA_NBR 7
35 #define EXTDMA1_TX_DMA_NBR 6
36 #define EXTDMA1_RX_DMA_NBR 7
37 #define MEM2MEM_TX_DMA_NBR 6
38 #define MEM2MEM_RX_DMA_NBR 7
40 /* dma8 and dma9 shared by ser1 and usb */
41 #define SER1_TX_DMA_NBR 8
42 #define SER1_RX_DMA_NBR 9
43 #define USB_TX_DMA_NBR 8
44 #define USB_RX_DMA_NBR 9
52 dma_ser1, /* Async and sync */
54 dma_ser3, /* Async and sync */
67 /* Masks used by cris_request_dma options: */
68 #define DMA_VERBOSE_ON_ERROR (1<<0)
69 #define DMA_PANIC_ON_ERROR ((1<<1)|DMA_VERBOSE_ON_ERROR)
71 int cris_request_dma(unsigned int dmanr, const char * device_id,
72 unsigned options, enum dma_owner owner);
74 void cris_free_dma(unsigned int dmanr, const char * device_id);